Concept:Buddhacharita is a celebrated Sanskrit epic poem that describes the life of Gautama Buddha, and its author is Ashvaghosha.
Explanation:Ashvaghosha was a renowned philosopher, poet, and dramatist of ancient India who composed the Buddhacharita in the Sanskrit mahakavya style.
He flourished around the 1st–2nd century CE and was closely associated with the court of King Kanishka.
The Buddhacharita narrates the complete journey of Gautama Buddha, covering his birth, renunciation, enlightenment, and final departure from the world.
Ashvaghosha is also credited with being one of the earliest writers of Sanskrit drama and a great exponent of Buddhist philosophy.
Among the other options, Vasumitra is known for the Buddhist text Mahavibhasha, while Nagarjuna founded the Madhyamika school and advanced the concept of Shunyavada.
Therefore, the authorship of Buddhacharita clearly belongs to Ashvaghosha alone.
Answer:The correct answer is C. Ashvaghosha.